Southwest Airlines operates a single fleet type that defines much of the passenger experience. Understanding how many seats are on Southwest plane models helps travelers choose flights and seats with confidence.
Across its narrow-body aircraft, seat counts vary by model and layout, but the airline maintains consistent two-class configurations designed for speed and simplicity.
| Aircraft Model | Typical Two-Class Layout | Total Seats | Main Cabin Seat Width |
|---|---|---|---|
| Boeing 737-700 | 12 First Class, 132 Main Cabin | 144 | 17.1 inches |
| Boeing 737-800 | 12 First Class, 150 Main Cabin | 162 | 17.1 inches |
| Boeing 737 MAX 7 | 12 First Class, 127 Main Cabin | 139 | 17.1 inches |
| Boeing 737 MAX 8 | 12 First Class, 143 Main Cabin | 155 | 17.1 inches
Understanding Southwest Seat Maps by AircraftEach aircraft type uses a slightly different seat map, and knowing which plane you are flying helps you anticipate row availability and overhead bin space. The airline assigns aircraft based on route demand and airport gate constraints, so travelers often see a mix of 737-700, 737-800, and 737 MAX variants on the same route. First Class Configuration DetailsFirst Class on Southwest is limited to about 12 seats on most flights and is positioned at the front of the cabin for quick boarding and deplaning. These seats are arranged in a single row with two seats on each side of the aisle, providing more personal space and priority boarding without the enclosed cabin feel of other airlines. Main Cabin Layout and CapacityMain Cabin is the primary seating area, and its width is standardized at 17.1 inches, which is wider than many competitors in the same class. Rows are arranged in a straightforward configuration, with no middle seats, making it easier to move down the cabin and find open seats near the front when needed. Key Takeaways for Southwest Travelers
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FAQ
Reader questions
Do all Southwest flights have exactly the same number of seats?
No, seat counts vary by aircraft type, with the 737-800 holding the most in the two-class layout at 162 seats and the MAX 7 holding fewer at 139 seats.
Can I select a seat in advance for free on Southwest?
Yes, all passengers can select seats in advance for free using their boarding position, and early selection increases the likelihood of sitting together if you are traveling in a group.
How does seat width compare to other low-cost carriers?
Southwest Main Cabin seats at 17.1 inches are wider than many low-cost seats, which are often closer to 16.5 inches, making long flights more comfortable.
Are there any rows that are always reserved or blocked on Southwest planes?
Rows near emergency exits may be blocked unless a passenger is qualified and willing to assist, and crew occasionally blocks rows to balance weight and center-of-gravity requirements.